API design is a huge topic these days and you find a lot of information about how to design good APIs. Unfortunately, most of it is about tools or technology: Use Tool X for great APIs! Use technology Y and everything will be fine!
Lately, I had a discussion with an on-premises data center manager who claimed that public cloud does not leverage any cost advantages over on-premises computing. His numbers would even prove that public cloud is more expensive than the on-premises operations they offer.
The Saga pattern has become quite popular in the context of microservices. While it basically is described correctly in the referenced source, most often I see a grave misunderstanding.